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can you ID these HC Pistons??
Posted: Fri May 11, 2012 3:48 pm
Author: malmojoe
Hi all, does anyone know what make these are? Not sure of the dia, but they have 030 stamped on them. Is that 3mm over or 0.3mm?
cheers
Posted: Fri May 11, 2012 4:30 pm
Author: z1000puddin
Is there no markings inside the piston on the under side of the crown ?
stu
Posted: Fri May 11, 2012 5:08 pm
Author: zed1015
Out of a Z900 ?
If they are 3mm o's that would be 69mm = 998cc and could be H**** pistons which were a common mod before high comp big bore kits were commonly available.
0.30 though is not a common metric oversize as they usually go up in 0.25 or 0.50mm increments.
0.30 would more likely signify 30 thou which is around 0.75mm equivalent.
Posted: Fri May 11, 2012 5:12 pm
Author: zed1015
They do look similar to the unknown pistons in my Manzano engine though.
Posted: Mon May 14, 2012 9:14 am
Author: malmojoe
no, nothing inside the pistons Stu, but I'm thinking zed1015 could be right,
this ebay listing states the pistons as H****, and although the profile is a little different they do look very similar.
Thanks for the info, very interesting.